The 22-year-old has been on a mountaineering trip in Nepal since early this month.

Last year Kobusch set a world record on Nepal's 6812m high Ama Dablam Mountain, according to his website.

More than 2000 people including one Australian have been killed by the 7.9 magnitude quake that struck Nepal on Saturday, triggering a number of avalanches including the deadly one at Everest Base Camp.

A screenshot of a video shows the deadly avalanche and (right) a helicopter lands to evacuate victims. (Jelle Veyt/AAP) (Jelle Veyt/AAP)One Australian reportedly died in the avalanche, with another seriously injured. (AAP) ()